Sec Form 4 Filing - Lillibridge Todd W. @ DIRTT ENVIRONMENTAL SOLUTIONS LTD - 2021-06-30

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Lillibridge Todd W. 2. Issuer Name and Ticker or Trading Symbol DIRTT ENVIRONMENTAL SOLUTIONS LTD [ DRTT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 7303-30TH STREET SE 3. Date of Earliest Transaction (MM/DD/YY) 06/30/2021 (Street) CALGARY, A0T2C 1N6 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Deferred Share Unit ( 1 ) 06/30/2021 A 3,423 ( 1 ) ( 1 ) Common Shares 3,423 $ 16,382.1 ( 2 ) 58,868 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lillibridge Todd W. 7303-30TH STREET SE CALGARY, A0T2C 1N6 X Signatures /s/ Nandini Somayaji, as attorney-in-fact for Todd Lillibridge 07/02/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each deferred share unit is the economic equivalent of one share of the Issuer's Common Shares. Generally, thirty days following the date that the Reporting Person ceases to serve on the board of directors of the Issuer, the deferred share units will be settled in cash based on the volume weighted average price of the Common Shares for the five immediately preceding days on which the Common Shares were trading on the Toronto Stock Exchange; provided, however that if the Issuer's Common Shares are trading on more than one exchange at such time, such calculation shall be based on the trading price over such five day period on the stock exchange with the higher average trading volume over the twenty trading days immediately prior to such date (such price the "Market Value"). ( 2 )The price used to calculate the number of DSUs granted was $4.1993, which was the Market Value of the Issuer's Common Shares on the date of grant.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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